HVAC company · El Cajon, CA
Blue Diamond Heating & Air
5.0 from 920 Google reviews#3 of 60 HVAC companies near El Cajon Last updated Sep 25, 2026
83SCORE
At a glance
- Trades
- HVAC
- Address
- 405 Vernon Way, El Cajon, CA 92020
How the 83 score breaks down
Rating quality44.6 / 45
Review volume21.3 / 25
Review recency15.0 / 15
Years in business2.5 / 10
Verified license0.0 / 5
Scores are calculated the same way for every company. See the method.
What customers say
5★915
4★2
3★0
2★1
1★2
Renter dealing with unfamiliar HVAC system.
Google review, Sep 23, 2026
Excellent! So happy with the install and our new system! The guys were very professional, friendly, and eager to answer my questions. Thank you, Blue Diamond team!
Google review, Sep 22, 2026
Exceptional work, professional people and they even brought us a window ac unit to use while the install was going on. Thank you guys! Would recommend to anyone
Google review, Sep 18, 2026
Rating distribution and reviews from the company's public Google listing.
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